Introduction: Titanium and its alloys are currently the most used biomaterials for dental implants due to a combination of properties that include high corrosion resistance, biocompatibility, re-passivation and appropriate mechanical propertie. However, despite its biocompatibility, titanium and his alloys also allow electrocemiacal corrosion in the oral environment, when they are exposed to some harmful factors such as temperature change, oxygen level and variuos pH level. Purpose: Purpose of the study evaluates the corrrosion behavior of the selected TiAlV samples compared to TiO2 coated samples, and compare thair behavior with the control (uncoated) titanium samples at artificial saliva and perform the surface characterization of the samples ad analize the surface properties of the alloy after application of the coating and contorl sample. Methods: We used a descritive method that was studied with the help of proffesional literature, articles and research in the fied of TiO2 coating and corrosion resistion of titanium implants. The search was done using databases such as Google Scholar, Web of Science, Pubmed and the collaborativ bibliographic COBISS.si in Slovenian and foreign literature. The search string were given in the time series since 2004 and later. Despite to the descriptive method, we also used a research method based on experimental work in which we wanted to obtain the influence of corrosion on the implants, which were modifayed with TiO2 coating according to the recipe Lorenzetti (2014) using hydrothermal technique, and then age them in artificial saliva. In the attachment of the diploma, we made zircon e-max implant crown of tooth 25 with the help of CAD / CAM in the dental laboratory. Results: With hydrothermal synthesis of TiO2 on the surface of implant we enlarg the oxide layer and made the nanostructured surface. The results were presented by crystal metallography analysis and overlay thickness. Discussion and conclusion: The results of the experimental work show us the extremely good corrosion resistance of the alloy, since titanium on the surface of all samples is in the oxidation state Ti (4+). After ToF-SIMS analysis, a 100 nm thick oxide layer was observed on our HT-coated samples, which is favorable for the implant as TiO2 has important nanostructured properties. The thicker layer that we have made improves corrosion resistance, as well as the better mechanical properties that are crucial in implant placement where high abrasive and shear forces are present.
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